Emergency Sleeping Bags for Survival - Lightweight and Compact Bivy Sack for Sleeping Bag or Emergency Blankets for Survival - Emergency Bivy Bag for Winter Survival Kit or Survival Bag : Amazon.co.uk:
Escape Bivvy
Tact Bivvy Emergency Survival Sleeping Bag | Survival Frog
Bivi Bag | Bivvy Bag | Lifesystems
SOL Escape Bivvy - Olive Green | Tamarack Outdoors